Log Message:
textproc/molybdenum: update to 0.1.8

v0.1.8
-Support for working with capture groups. When -P % is specified, the
 replacement string specified via -r will substitute capture groups for all
 occurences of % or %[0-9].
-Support for compact output.
-Rework of colored output: when not specified, the output stream is checked.
 If this is a TTY, no color output will be produced.

v0.1.7
-Filename pattern matching with -f and -F is now case-sensitive only when -s
 is set
-Added primitive method to only output the matches via -m. This should be
 replaced with proper Regex submatch support.